dễ thương quá minion 

d, X/8*32+X/3*18-X/5*10=120

   X*32/8+X*18/3-X*10/5=120

  32X/8+18X/3-10X/5=120

  4X+6X-2X=120

  8X=120

 X=120/8

X=15

a, ( 25 * 12 - X - 25 ) : 25 = 4

( 25 * 12 - x - 25 )           = 4 * 25 

( 25 * 12 - x - 25 )           = 100

300 - x - 25                    = 100

300 - x                           = 100 + 25

300 - x                           = 125

x                                   = 300 - 125

x                                   = 175

\(\left(3x-25\right)-\left(x-9\right)=2-x\Leftrightarrow3x-25-x+9=2-x\Leftrightarrow2x-16-2+x=0\Leftrightarrow3x-18=0\)

\(\Leftrightarrow3x=18\Leftrightarrow x=6\)

\(2x+\left(-73-120\right)-\left(20-120\right)=5\Leftrightarrow2x-73-120-20+120=5\Leftrightarrow2x-93=5\)

\(\Leftrightarrow2x=98\Leftrightarrow x=49\)

๛๖ۣۜTɦủү❄๖ۣۜAɾĭαηηεツ Trình bày bài cho dễ nhìn nha -.-

\(\left(3x-25\right)-\left(x-9\right)=2-x\)

\(3x-25-x+9=2-x\)

\(\left(3x-x\right)-25+9=2-x\)

\(2x-16=2-x\)

\(2x+x=2+16\)

\(3x=18\)

\(x=6\)

\(2x+\left(-73-120\right)-\left(20-120\right)=5\)

\(2x+\left(-73\right)-120-20+120=5\)

\(2x+\left[\left(-73\right)-20\right]+\left(120-120\right)=5\)

\(2x+\left(-93\right)+0=5\)

\(2x+\left(-93\right)=5\)

\(2x=98\)

\(x=49\)

120 x 64 + 320 - 25 x 4 x 16

= 120 x 64 + 64 x 5 - 25 x 64

= 64 x ( 120 + 5 - 25 )

= 64 x 100

= 6400

mk đúng đó

120 x 64 + 320 - 25 x 4 x 16 = 6400

k cho mk nha

120 x 64 + 320 - 25 x 4 x 16 = 7680 + 320 - 100 x 16

                                              = 8000 - 1600 = 6400

  giải

x/120 = 3/8 . -4/25

x/120 = -3/50

x       = -3/50 . 120

x       = -36/5

trời lạnh bấm máy run hết cả tay, xin 1 li ke nha bạn.

x/120 = 3/8 . -4/25

x/120 = -3/50

x       = -3/50. 120

x      = -36/5

xin 1 li ke thôi

\(\frac{x}{120}=\frac{3}{8}.-\frac{4}{25}=-\frac{3}{50}\)

\(\frac{x}{120}=-\frac{3}{50}\)

\(x=\frac{120.\left(-3\right)}{50}=-7,2\)

\(x\left(x-2\right)=0\)

\(\Rightarrow\orbr{\begin{cases}x=0\\x-2=0\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=0\\x=2\end{cases}}\)

120 x 64 + 320 - 25 x 4 x 16 

= ( 120 x 64) + 320 - (25 x 4 x 16) 

= 7680 + 320 - ( 100 x 16 )

= 8000 - 1600

= 6400

120 + 25 x 3 = ( x + 23 ) : 4 

120 + 75 = ( x + 23 ) : 4

195 x 4 = x + 23 

x + 23 = 780

x = 780 - 23 = 757

\(120+25.3=\left(x+23\right):4\)

\(120+75=\left(x+23\right):4\)

\(195.4=x+23\)

\(\Rightarrow780=x+23\)

\(\Rightarrow x=757\)

120 + 25 . 3 = (x + 23) : 4

=> (x + 23) : 4 = 120 + 25 . 3

=> (x + 23) : 4 = 120 + 75

=> (x + 23) : 4 = 195

=> x + 23 = 195 . 4

=> x + 23 = 780

=> x = 780 - 23

=> x = 757

Vậy x = 757

a) \(2x-\left(x+25\right)-75=-12\)

\(\Rightarrow2x-\left(x+25\right)=63\)

\(\Rightarrow2x-x-25=63\)

\(\Rightarrow x=88\)

Vậy \(x=88\)

b) \(\left(x-12\right)-15=\left(120-18\right)-\left(20+x\right)\)

\(\Rightarrow\left(x-12\right)-15=102-20-x\)

\(\Rightarrow x-12-15=82-x\)

\(\Rightarrow x-27=82-x\)

\(\Rightarrow2x=27+82\)

\(\Rightarrow2x=109\)

\(\Rightarrow x=54,5\)

Vậy \(x=54,5\)

c) \(17-\left\{-x-\left[-x-\left(-x\right)\right]\right\}=-16\)

\(\Rightarrow17+x+x+x=-16\)

\(\Rightarrow17+3x=-16\)

\(\Rightarrow3x=-33\)

\(\Rightarrow x=-11\)

Vậy \(x=-11\)

d) \(x-\left\{\left[-x+\left(x+3\right)\right]-\left[\left(x+3\right)-\left(x-2\right)\right]\right\}=0\)

\(\Rightarrow x-\left\{\left[-x+x+3\right]-\left[x+3-x+2\right]\right\}=0\)

\(\Rightarrow x+2=0\)

\(\Rightarrow x=-2\)

Vậy \(x=-2\) (Câu này hơi tắt)